#light quality

Now growers will choose to use LED plant lights to fill light. Because the growth of plants can be affected by the control and adjustment of LED plant li.ghts to achieve the effect that growers want, LED plant lights are one of the most important conditions in tissue culture lighting, mainly from light quality, light intensity, light cycle, etc. aspect:

Light quality

The light quality of LED plants lights has a significant effect on the induction of callus, the proliferation of cultured tissues and the differentiation of organs. Like lily bulbs, cultured under red light, the callus differentiated after 8 weeks. The callus will appear only after several weeks of culture under blue light.

15 days after inoculation with gladiolus bulbs, shoots were cultivated under blue light, and the formed seedlings grew vigorously, and the seedlings were slender under white light. The light quality of LED plants lights also has a certain impact on the growth of tissue cultured seedlings. Studies like carnations show that different wavelengths of light play different roles in tissue culture. Blue light helps induce the production of lateral buds and increase protein content. Red light can promote the growth and neat growth of buds.

White light is beneficial to the growth and development of tissue cultured seedlings, with the highest biological yield, followed by red light; blue light promotes the increase of reducing sugar content in stems and leaves, but has little effect on total sugar; white light can also increase the synthesis of chlorophyll. Fan Cihui et al. found that gladiolus globules emerge earlier under blue light than under white light and red light, the seedlings grow vigorously, and the root system is strong; the seedlings are slender under white light, and the number of seedlings under red light is small.

Red light induced callus induction and growth of lily and mung bean better than self-light. If you can consciously apply these LED plant light quality effects to the large-scale production of seedlings, you can achieve the purpose of energy saving and increase production.

Light intensity

Tissue culture LED plant light intensity has an important impact on cell proliferation and organ differentiation. From the current research situation, light intensity has a significant effect on cells and the initial division of cells. , The light is strong, the seedlings grow stout, and the light is weak, the seedlings grow easily. In plant tissue culture, external carbon sources are mainly used as energy sources, and light is mainly used to meet the needs of plant morphology.

The light intensity of LED plant light of 300～500lx can be guaranteed, but for most flowers, 2000～3000 1x is more suitable. In the rooting stage, in order to make the rooting seedlings grow strong and adapt to the field environment as soon as possible, it is necessary to appropriately increase the intensity of the LED plant light to 3000~5000lx, or even 10000lx. If a higher concentration of CO2 is added, the photosynthesis of the seedlings can be enhanced, forcing them to change from heterotrophic to autotrophic, so that the tissue cultured seedlings can grow more robustly.

In order to save costs, in the construction and design of the tissue culture room, you can consider making full use of daylight. "Rooms with better lighting are used as cultivation rooms, and rooms with poor or dark light are used as reagent rooms and cultivation rooms. Some people use greenhouses as cultivation rooms and have also achieved better cultivation results. Using natural light as a light source can reduce Cost of production.

At the same time, since natural light is generally stronger than fluorescent lamps, the cultivated seedlings are relatively short, although the plants grow under strong light. It is relatively slow and slightly green, but due to the accumulation of carbohydrates, the tissue is full and it is easy to adapt to the external environment, and the teleportation survival rate is high.

If it is only beneficial to natural light, it will be greatly affected by the weather. On the one hand, the number of layers and columns in the room and floor are not evenly exposed to light. On the other hand, in clear and cloudless weather, excessive sunlight can burn the seedlings and even die. It is necessary to use thin curtains for proper shading; but under continuous rainy conditions and insufficient light, the seedlings will be weak and long. Fluorescent lights must be installed on all cultivation racks. It needs to be flexibly adjusted to the prevailing weather conditions.

Light period

When the test-tube shoots are cultured in vitro, a certain light-dark cycle is used for tissue culture. The most commonly used time periods are 16 hours bright and 8 hours dark. Studies have shown that organs and tissues of varieties that are sensitive to short sunlight are prone to differentiation under short sunlight. Callus produced under long sunlight sometimes needs to be cultured in the dark, especially the callus of some plants is darker. Light.

Okay, like callus of safflower and black ash. For most plants, 14-16 hours of LED plant light illumination and 8-10 hours of darkness can meet the needs of growth and development. However, different plants and different cultivation purposes sometimes have certain differences. The 12h LED plant light cycle is suitable for chrysanthemum tuber seedlings. Geranium bulimia callus induces bud formation, 15-16h light produces the most buds. If 24h light, the callus cannot turn green and can not produce buds; under 16-18h light, morning glory stem meristem can grow The formation of small plant wipes does not require light all day; under 16h light and long-term darkness, the taro leaves are cut into leaves and seedlings.

In addition, the LED plant light cycle also has a significant impact on the formation and induction of flower buds. Some plants need dark culture during the callus induction period, and light during the differentiation bud stage, such as gladiolus; carnations need dark culture a few days before the cultivation, and then transfer to normal culture, which is conducive to the occurrence of callus; some photosensitive varieties Flower bud differentiation can be induced under light conditions and time.

Advantages of LED plant lights in tissue culture

1. It can be well used in tissue culture, and can be illuminated at close range to provide sufficient light to plants;

2. The wavelength can be customized, which can replace high-pressure sodium lamps, halogen lamps, and fluorescent lamps with 3-5 times the power, saving 80% of electric energy;

3. Long service life, up to 50,000 hours;

4. The ratio of lamp beads can be freely matched to meet the needs of different plants and different growth stages;

5. It can control the growth rate of plants and predict the maturity time of the market;

6. LED plant light is a kind of energy-saving, environmentally friendly and efficient plant growth light.

7. The heat emitted is much lower than traditional plant growth lamps.

8. No standard power socket connectors for drivers or cooling fans are required.

9. Promote early maturity of plants, increase production, and improve the quality of melons and fruits;

10. Ensure the taste of vegetables in greenhouses and realize off-season cultivation;

11. Inhibit the reproduction of germs and pests, and make it green without pollution.

The effect of LED plant light quality on indoor crops

The light quality of LED plants affects the growth of indoor crop roots. Light can pass through the internal light environment, through the regulation of photoreceptors, and regulate their growth and development. Although there is no direct light, the response to different light quality is also different. The blue light of LED plant lights is conducive to the growth and development of plant roots. Blue light can increase the root vigor, total absorption area and active absorption area of seedlings. The cultivated rice seedlings were irradiated with the blue light of the LED plant light, and it was found that the protein content accumulated in the root system of the rice seedlings was high, the non-protein nitrogen content was low, the ratio of protein nitrogen to total nitrogen was high, and the total nitrogen content was also high. The synthesis of nitrogen compounds in the root system of the seedlings, the production of protein accumulates in the root system. Seedling raising based on the blue light effect of LED plant lights on crop roots has been applied by reproducers.

The effect of LED plant light quality on the growth of indoor crop leaves, leaves are the main organs for photosynthesis of plants, and the change of LED plant light quality directly affects leaf growth. According to reports, the leaf area of birch seedlings grown under blue light is twice that of seedlings under red light, and the area of leaf epidermal cells, palisade tissue, sponge tissue and functional chloroplasts are larger than those under white and red light. The rice seedling experiment has the same result. Compared with white light, blue light can obviously promote the growth of rice seedling leaves, increase the angle between the leaf and the sheath, and make the leaves flat; while the effect of red light is opposite, it inhibits the increase of leaves. Wide growth. However, some people think that the compound light is more conducive to the growth and development of the leaves. The leaf area of lettuce under the combination of red, blue, and green light is extremely large, followed by white light, and red and blue light. Studies have also shown that increasing the proportion of LED red light in the compound light has a certain promotion effect on the increase of tobacco leaf area, but the leaf weight of the leaf is reduced, and the leaf becomes very thin.

The effect of the light quality of the LED plant light on the growth of indoor crop stems. Different wavelengths of light can regulate the growth of the stems by affecting the level of endogenous hormones in the plant. Blue-violet light can increase the activity of indole acetic acid oxidase and reduce the level of auxin, thereby inhibiting the growth of plants. At the molecular structure level, red light can promote cell elongation, while blue light has the opposite effect. The long-wavelength LED plant light red light promotes the elongation of the stem, while the short-wavelength light inhibits the elongation of the stem.

The effect of LED plant light spectrum on indoor crops

UV spectrum (100–400 nm)

The ultraviolet spectrum that is invisible to the human eye is outside the PAR range (100nm-400nm). Approximately 10% of sunlight is ultraviolet light. Just like humans, plants can be harmed by excessive exposure to ultraviolet light. Divided into 3 types, UV-A (315-400 nm), UV-B (280-315 nm) and UV-C (100-280 nm).Although the benefits of using ultraviolet light in indoor cultivation are still being researched, ultraviolet light usually leads to a deeper purple-in fact, a small amount of ultraviolet light can have a beneficial effect on color, nutritional value, taste and aroma.Studies have shown that using controlled amounts of ultraviolet light can also reduce environmental stress, fungi and pests. Studies have shown that the use of UV-B light (280 nanometers to 315 nanometers) can increase the cannabinoids such as tetrahydrocannabinol in cannabis.

Blue light spectrum (400–500 nm)

The blue light spectrum is widely responsible for improving plant quality—especially in leaf crops. It promotes stomata opening-allowing more carbon dioxide to enter the leaves. Blue light drives the peak absorption of chlorophyll pigments required for photosynthesis.This is essential for seedlings and seedlings in the vegetative stage, as they will establish a healthy root and stem structure-especially important when stem extension must be reduced.

Green light spectrum (500–600 nm)

Compared with the red or blue spectrum, the green wavelength is less important for plant photosynthesis because it (not) easily absorbs chlorophyll. Nevertheless, green is still absorbed and used for photosynthesis. In fact, only 5-10% is actually reflected-the rest is absorbed or transmitted to a lower place! This is because green light can penetrate the canopy of plants,In the greenhouse, due to the presence of sunlight, the use of LED grow lights to supplement the green light spectrum is less important than crops that are only grown indoors (such as hemp or vertical crop cultivation).

Red light spectrum (600–700 nm)

Red light is the most effective spectrum for promoting photosynthesis because it is highly absorbed by chlorophyll pigments. In other words, it is located at the peak of chlorophyll absorption. The wavelength of red light (especially around 660nm) promotes the growth of stems, leaves and general vegetative growth-but the most common is the tall extension of leaves and flowers.It must be balanced with blue light to counteract any excessive stretching, such as deformed stem elongation. It is important to consider that although red is the most sensitive spectrum to plants, its efficacy will really come into play when combined with other PAR wavelengths.

Far-red light spectrum (700-850 nm)

Far-red affects plant growth in several ways-one is to initiate the shade avoidance response. At about 660nm (dark red), plants will feel bright sunlight. From 730 nanometers and above-that is, the ratio of far red light to red light is higher, the plant will detect the light "shadow" from another plant or a leaf higher in the canopy, so stem and leaf stretching will occur.

The light quality ratio of 400wLED grow light is different for different plants. The ratio of some plants is listed below:

(1) Lettuce: The light sources of red and blue light 6:1 and 7:1 respectively for planting and seedling cultivation are the most suitable for its growth.

(2) Leek: The ratio of plant height, stem thickness, leaf width and other mass ratios of leeks under the red/blue 7:1 treatment was significantly higher than other treatments.

(3) Cucumber: 7:2 is the best ratio of red and blue light for the growth of cucumber seedlings. And the growth period of 7:1 is the best ratio of red and blue light.

(4) Strawberry, tomato: red and blue light 9:1 is good for full fruit and rich nutrition.

(5) Holly: Red and blue light are arranged according to the ratio of 8:1. Holly grows best, is strong and has a very developed root system.

(6) White radish: the most suitable light quality for growth: the ratio of red and blue is 8:1.

(7) Sprouts: The effect is the most obvious with the ratio of red, green and blue light of 6:2:1.

(8) Green vegetables and water spinach: 7:1 is the best ratio of red and blue light for the growth of green vegetables and water spinach leaves.

(9) Calla lily: For growth conditions, the ratio of 6:2 between red and blue light is the best.

(10) Lettuce: The ratio of red and blue light is 9:1, which is beneficial to the growth of lettuce.

(11) Anthurium andraeanum scorching sun: Comprehensive analysis, 7:3 red and blue light treatment is better, which is conducive to morphology, root growth and dry matter accumulation.

(12) Dendrobium officinale: Red and blue light 7:3, the proliferation effect is the best; at 6:4, it is more conducive to photosynthesis and material accumulation of seedlings.

Red light and blue light are the main light sources absorbed by plants, as well as signal light sources for the main photoreceptors of plants. Using 400wLED grow lights to supplement light with red and blue light sources can effectively control the length of cucumber seedlings, improve the quality of seedlings, and reduce the damage caused by physiological stress under low light conditions. The combination of red and blue light promoted the biomass accumulation of pepper, rice leaflet seedlings and lettuce plants.

The leaf area value of tomato seedlings under the condition of red/blue (2:1) supplementary light is the largest, while under the condition of red/blue (7:1) supplementary light, the value of leaf area of tomato seedlings is relatively small, indicating that the red light is increased The ratio can only promote leaf growth within a certain range.

Red light is conducive to the radial growth of rape stems and leaves. Appropriately increasing the proportion of blue light is beneficial to the lateral growth of stems and leaves, root development and photosynthetic pigment synthesis.

Increase biomass and nutrients. Low light conditions will reduce the soluble protein content of cucumber seedlings. After the red and blue fill light, the soluble protein increased significantly. The soluble sugar content and soluble protein content of tomato seedlings reached the maximum under red/blue (2:1) supplement light.

The 400wLED grow light red and blue mixed light source treats gourd and pumpkin seedlings with developed roots, high dry matter content, improved seedling index, and improved seedling quality; the increase of blue components in the red and blue mixture inhibits the elongation of the seedling stems and promotes the thicker stems.

The cotyledon area, soluble sugar, starch, carbohydrate, sucrose, and C/N of lettuce seedlings under 400wLED grow light red light and blue light are the largest, and are significantly higher than red light, indicating that adding appropriate amount of blue light to red light has a better effect. It is more conducive to the accumulation of carbohydrates in lettuce seedlings. 25% and 50% blue light treatments are conducive to the accumulation of lettuce biomass. The photosynthetic pigment content is more, the leaf area is larger, and the root system is developed, which is conducive to nutrients and water absorption, and the growth is better than other treatments. The chlorophyll content is greatly affected by the R/B ratio, and blue light significantly reduces the chlorophyll content of strawberry leaves.

Red light at 660 nm and blue light at 450 nm can adjust the chlorophyll content of lettuce. With the increase of blue light and the decrease of red light, the content of chlorophyll a and b gradually decreases. The net photosynthetic rate and stomatal conductance of cucumber seedlings treated with red and blue light were the largest. The net photosynthetic rate, stomatal conductance and transpiration rate of single red light and blue light are lower, but the intercellular CO2 concentration is higher. Appropriate increase in blue light can increase the antioxidant enzyme activity of tomato seedlings. As the proportion of red light increases, the activities of SOD, CAT and other antioxidant enzymes first increase and then decrease. Under R/B(2:1) supplementary light, SOD activity decreases.

In different growth stages, the blue light of 400wLED grow lights has different effects on the biomass of Wakata. The biomass increase in the early growth period is inversely proportional to the red/blue value, and in the late growth period it is directly proportional to the red/blue value. Blue-violet light can inhibit stem elongation. Compared with white light, blue-violet light significantly reduces the height of ginger plants and increases stem thickness. In terms of the effect of light quality on roots, oat plants treated with blue and violet light have more roots.

The red/blue (1:1) light energy combination can significantly improve the growth and quality indicators of lettuce; red/blue (7:3) is the most suitable light quality condition for cucumber seedling growth, and the maximum photosynthetic rate under light can reach a single color Red 4 times.

When the red/blue ratio is 8:1, lettuce shows a clear photosynthetic advantage. Adding yellow light to the red and blue composite light is beneficial to the synthesis of spinach photosynthetic pigments and significantly promotes the growth of spinach. Adding yellow light and purple light can increase the photosynthetic potential of cherry tomato seedlings and alleviate the red and blue weak light stress.

The light quality of 400wLED plants has a great influence on plant growth and development, photosynthetic characteristics, yield and quality. Green light and red light significantly promote the elongation of the stems of colored sweet pepper seedlings, and blue light has a dwarfing effect on the seedlings. The compound light has a better effect than monochromatic light, and it prolongs significantly under green light.

Red light is not conducive to the increase of chrysanthemum stems, and the stem length of the red light treatment is 43.0% less than that of the control. Red light is conducive to the sturdy stems of chrysanthemum plants. Increasing the proportion of blue light can effectively reduce the height of cucumber seedlings. Increasing the proportion of red light allows more photosynthesis products to be transported to the leaves of seedlings.

The chlorophyll a, chlorophyll b and carotenoids of lettuce all increased with the increase of the blue light ratio. After treatment with blue light or increasing the proportion of blue light, the chlorophyll content of plants increased significantly, and the photosynthetic rate increased significantly.

This shows that a higher blue light intensity ratio may be beneficial to the synthesis of photosynthetic pigments. The photosynthesis of plants with 7% blue light can proceed normally under the combination of red and blue light; as the proportion of blue light increases, the photosynthetic capacity of the leaves also increases, but when the proportion of blue light exceeds 50%, the photosynthetic capacity of the leaves will decrease.

Under single light conditions, the plant dry matter accumulation is more, the internodes are long, and the total sugar content is higher; the plant dry matter accumulation under single light quality is less, and the internodes are shorter, which inhibits the extension of the stem to a certain extent. Grow and grow. Red light treatment had the highest soluble sugar content in cucumber seedlings, and blue light treatment had the highest soluble protein content in cucumber seedlings.

Compared with the control, there is a significant difference. Red light treatment increased the chlorophyll content, stomatal conductance and transpiration rate of tomato seedlings, and the photosynthetic rate was significantly higher than other treatments; the blue light treatment had slightly lower chlorophyll content, but the photosynthetic rate was still significantly higher than that of the control, which may be due to blue light promoting stomata Open, increase the concentration of CO2 between leaf cells. The increase in plant leaf stomatal conductance is specifically induced by blue light.

For most plants, the red light of 400wLED grow light promotes the increase of leaf area. Under the red light treatment, the leaves of radish seedlings, toon seedlings, tomatoes, cucumber seedlings, tobacco, grass poison and lettuce expanded faster. Blue light can increase leaf area, but blue light inhibits leaf expansion of tobacco, poinsettia, and moss.

Adding blue light to red light can significantly increase the leaf area of lettuce. The leaf area of spinach in the red light, blue light and yellow light treatments was significantly larger than other treatments. Red light treatment is beneficial to the accumulation of dry matter in crops such as tomatoes, eggplants, cucumbers, and lettuce. The combination of red and blue light promoted the increase of the biomass of pepper, Phalaenopsis, Weiwei and cucumber. Adding green, yellow, purple, and white light to the combination of red and blue light has a significant effect on the biomass of lettuce, cherry tomatoes and non-heading Chinese cabbage.

The red light of 400wLED grow lights is conducive to the accumulation of carbohydrates in plants. Under red light treatment, the soluble sugar content of spinach, cucumber, pepper, tomato seedlings, and radish sprouts can be significantly increased. Red light can promote starch accumulation, which has been reported in crops such as soybeans, cotton, oil sunflower buds and rapeseeds. Because red light can inhibit the output of photosynthetic products in the leaves, so that starch accumulates in the leaves. The change of soluble protein content in leaves is one of the reliable indicators reflecting the physiological functions of leaves.

The blue light of 400wLED grow light is conducive to protein synthesis. Blue light promotes the soluble protein content of pea seedlings, lettuce, cucumber and bean sprouts. Blue light significantly promotes the increase of total amino acid and sugar content in chrysanthemum leaves. Blue light can significantly promote the dark respiration of mitochondria, and organic acids produced during respiration can be used as the carbon skeleton of synthetic amino acids, which is conducive to protein synthesis.

Compound spectra also have different promotion effects on plant photosynthesis. Yellow light is beneficial to the synthesis of soluble sugar and protein in lettuce, the formation of sucrose content in tomatoes, and the accumulation of free amino acids in rape buds.

The combination of low-dose UV-B and red light significantly increased the accumulation of sugar in tomatoes. Blue light and UV-A can promote the protein synthesis of cucumber fruits. The combination of blue and red light promotes the accumulation of soluble protein and soluble protein.

The red-blue-white compound light promotes the synthesis of soluble sugar and nitrogen content. The total starch content of tomato seedlings treated with the combination of red, blue and green light was the worst.

Industrial hemp is an annual herb. In addition to its particularly important properties, it also has more uses. For example, it is a raw material for fiber products, clothing, ropes, sails, grease, paper, and medical supplies. It also has many medicinal uses. value.

With the legalization of cannabis cultivation now, factories and enterprises as well as small agricultural individuals are growing cannabis. Because of the high economic income brought by its wide range of applications, growers use LED grow lights to supplement light to shorten the cycle and improve quality and yield. How to grow hemp with LED grow lights?

First of all, we must know that if each cannabis plant is exposed to the same light, the illumination of the LED grow light must be uniform. The uniformity of LED cannabis grow light illumination can be divided into the uniformity of chip distribution, the installation height and the distance distribution between the LED grow lights.

yaorong LED grow light chip distribution

The chip distribution is based on the characteristics of the LED grow light supplement light. After the lamp bead ratio is obtained, how to intersect between the chips is calculated, and finally distributed on the plant light package and the COB panel according to a certain rule, so that each The LED cannabis plant light illuminates the main area with uniform light quality and light intensity.

Installation height and distance distribution of yaorong LED grow lights

The arrangement of the spacing between each LED grow light is mainly determined according to the light intensity. In addition, the installation height of the LED cannabis plant light must be considered. After a comprehensive calculation, the distance distribution between the LED grow lights can be obtained to ensure large-area cannabis cultivation. Uniformity of illumination.

yaorong LED grow light lamp bead distribution

The uniform distribution of LED grow light beads is to ensure that the light energy is evenly irradiated on the hemp. The lamp beads are mainly composed of red and blue lamp beads. If the positions of the lamp beads of different spectrum are not reasonably and evenly distributed, the growth state of cannabis in the irradiation area of the LED grow light will be different, and the meaning of using the LED grow light will be lost.

How to control the distribution of lamp beads in LED grow lights? First determine the number of LED grow light beads, and then determine the ratio of red and blue lamp beads according to the needs of hemp, and then install them on the lamps evenly in a dislocation. If it is a small area of light supplementation, it can ensure uniform light in the middle, if it is a large area of light supplementation, ensure that the surrounding light is even, so that the adjacent LED cannabis plant lights can be superimposed, which can just achieve the desired effect.

Physical reaction with optical equipment

The LED grow light can also realize the efficient use of light under the condition of uniform illumination. The main physical principles used are light reflection and light refraction.

The LED hemp grow light uses the reflection and refraction of light not only to make the light more uniform, but also to achieve high luminous efficiency. It mainly uses the reflector and the metal substrate used by the COB. The principle of the LED grow light reflector reflects the light emitted by the light source into a beam, increasing Local light intensity, the reflective effect of the metal substrate is also to maximize the light energy emitted by the LED grow light lamp beads to be used by plants, the reflected part is auxiliary light, it also has the role of fixing the lamp beads and heat dissipation.

yaorong LED grow lights regulate light to affect the growth of cannabis

Regulate the photoperiod

Cannabis, like humans, requires rest time. Long-term supplementation of light does not have a good effect on the growth of cannabis.

If it is not affected by people in the natural environment, then each plant adapts to the natural environment to form its own photoperiod and survives in this uncontrollable natural environment. But if it is an artificial cultivation environment with LED grow lights, we can control the photoperiod of cannabis by adjusting the spectrum of LED plant lights.

Adjust light intensity

The light intensity will affect the cell proliferation and the differentiation of seedlings, buds and roots of cannabis, and indirectly affect the growth of cannabis. Different light intensities correspond to the various stages of cannabis growth. In the early stage of growth, too much light is not required to meet the needs of germination and growth. Yes, with the growth of cannabis, the light intensity should be appropriately increased, which is very important for the healthy and neat degree of seedlings. When flowering, LED grow lighting directly affects the flowering period and fruit setting rate, and also determines the yield and quality of cannabis.

Control light quality

The quality of LED grow light is mainly the choice of lamp beads. LED grow lights generally have red light beads, blue light beads, white light beads and full-spectrum lamp beads. Numerous experiments by scientists have proved that the light needed for the growth of cannabis is red light. As with blue light, most users choose red and blue light beads, but there are not only plants that need red and blue light, so when choosing light beads, you need to customize the light beads according to the light quality required for the growth of the plant.

Cherries have a strong light-loving nature. Adequate light can make cherries grow strong, sweet fruits, and a high fruit setting rate. Therefore, when planting cherries, pay special attention to supplement light. When the light is insufficient, LED grow lights should be used to fill light. Let us take a look at how LED grow lights make cherries big and red?

The use efficiency of yaorong LED grow lights

1. Pay attention to the wavelength range of red and blue light when choosing yaorong LED grow lights. Because red and blue light have obvious effects on plants, but that is only for most plants, not all plants have effects. Red light with a wavelength of about 660nm and blue light with a wavelength of about 450-470nm have the best effect on plants.

2. Pay attention to the distance between the LED grow light and the plant when filling light. Because the lighting will emit heat, even the cold light source LED grow light also has it, it is best not to be close to the plant, and to leave a proper distance, so as to achieve an excellent light supplement without harming the plant.

3. Pay attention to the ratio of red and blue. The ratio of red and blue to red and blue for each type of plant is different, because each type of plant has different requirements, so it is more clear that when choosing the red and blue ratio of LED grow lights, it is only necessary to look at the planting plant.

4. Pay attention to the power of the LED grow light. Power will affect the light intensity. Under certain conditions, the light intensity affects the progress of photosynthesis. Then it depends on the characteristics of the plants. If plants are more light-loving, choose high-power to meet the light demand, otherwise choose normal power.

5. Pay attention to the fill-in time when filling in the light. Different plants have different requirements for lighting time. This is the same as the above power. Seeing the characteristics of the plants, plants that are more light-loving must take a longer time to fill the light. Otherwise, normal fill light is fine, and the plants also need to rest, pay attention to staying Set a certain amount of time for the plants to rest.

Improve cherry growth efficiency

There are two ways to improve the efficiency of cherry growth by LED grow lights. The first is to determine the spectral response curve required for cherry growth, the red-blue demand ratio, the total amount of light required and the photoperiod, and then customize the LED grow light spectrum, and then adjust it according to plant growth. The second is to provide an LED plant light lighting system according to the needs of the plant light environment. Light is used as a nutrient in the process of plant growth to ensure the healthy growth of plants.

The growth efficiency of cherries is closely related to photoperiod, light intensity and light quality

Controlling the photoperiod

Plants, like humans, also need time to rest. Long-term supplementary light does not have a good effect on the growth of plants. Plants are just like people’s work and rest time. This is the photoperiod of plants.

If it is not affected by people in the natural environment, then each plant adapts to the natural environment to form its own photoperiod and survives in this uncontrollable natural environment. But if it is an artificial cultivation environment with LED grow lights, we can control the photoperiod of cherries by adjusting the spectrum of LED grow lights.

Control light intensity

The light intensity will affect plant cell proliferation and the differentiation of seedlings, buds and roots, and indirectly affect the growth of cherries. Different light intensities correspond to the various stages of cherry growth. In the early stage of growth, too much light is not required to meet the needs of germination and growth. Yes, with the growth of cherries, the light intensity should be increased appropriately, which is very important for the health and order of the seedlings. When the cherry blossoms and bears fruit, the intensity of the LED grow light directly affects the flowering period and fruit setting rate, and also determines the output of the cherry. quality.

Control light quality

The quality of LED grow light is mainly the choice of lamp beads. LED grow lights generally include red light beads, blue light beads, white light beads and full spectrum light beads. Most of the light needed for the growth of cherries is red light and blue light, and other light spectra are also needed, but the effect is weak and has little effect.

How to Take Great Nature Photos: Know Texture discusses how textures can increase the depth and interest of photographs. It then goes into the aspects of light that go into creating texture in a flat image.

Purple Thistle Nature (and in fact the entire world) is full of textures, and emphasizing textures in your photography can be a great way to create powerful photos. Everything we look at has texture, even something completely smooth, so I think it’s easy to take texture for granted, and forget how important it can be. Photos are, of course, completely flat, but by adding texture effectively we…